Hi @Keir , thank you for taking the time in sharing the use case with us.
As layout model does not support language detection. There is no such way to combine models, one option is custom composed model. Since your use case is different towards language detection.
The product team is interested in your scenario. PG wanted to understand more about it in order to provide the best feature. If possible, could you please send us an email to azcommunity@microsoft.com with the below details so that we can set up a call between you and PG to discuss more on this?
Subject: Attn: Vasavi
Thread URL: Link to this thread.
Use case/Scenario:
I hope this helps.
Regards,
Vasavi
-Please kindly accept the answer if you feel helpful to support the community, thanks.